An Efficient Pole Extraction Technique for the Computation of Green´s Functions in Stratified Media Using a Sine Transformation

Author

Polimeridis, A.G. ; Yioultsis, T.V. ; Tsiboukis, T.D.

Author_Institution

Dept. of Electr. & Comput. Eng., Aristotle Univ. of Thessaloniki

Volume

55

Issue

1

fYear

2007

Firstpage

227

Lastpage

229

Abstract

An efficient and automatic algorithm for the extraction of surface wave poles of the multilayered spectral-domain Green´s function is presented. With the sine transformation, we have managed to locate any pole, no matter how close to the branch point singularity lies, something that has not been feasible with techniques proposed till now. The aforementioned transformation maps the k_rho-plane to the w-plane, where the branch point is removed, thus enabling the application of a fast numerical contour integration technique proposed, which is inaccurate when dealing with poles very close to the branch point

Keywords

Green´s function methods; inhomogeneous media; surface electromagnetic waves; Green´s functions computation; multilayered spectral-domain; numerical contour integration technique; sine transformation; stratified media; surface wave poles extraction technique; Green´s function methods; Integral equations; Integrated circuit interconnections; Microstrip antennas; Moment methods; Nonhomogeneous media; Patch antennas; Printed circuits; Surface fitting; Surface waves; Closed-form Green´s functions; discrete complex image method (DCIM); pole extraction; sine transformation; surface wave poles;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2006.886574

Filename

4052630